[Techtoolslist] Fluke 6809 pod

[John Robertson]

On 03/19/2016 4:57 PM, Alan McCormick via Techtoolslist wrote:
> I have a Z80 Fluke 90 that I bought about 20 years ago. Since then I've also stumbled across a 9010 and two pods (Z80 and 8085).
> Is the Z80 Fluke 90 hardware the same as the 6809? It would be nice to mod a Fluke 90 to support both or maybe even the 6502. Anyone have a firmware dump for the 6809 Fluke 90?

Fluke 90 Series dumps are on the FTP site. I have the 6809. I don't know 
if it can be rewired, I was able to modify a spare 8085 to become a 
Z80...and then I found a Z80 Series 90. Gah.

John :-#)#
>
>        From: John Robertson <jrr at flippers.com>
>   To: "techtoolslist at flippers.com" <techtoolslist at flippers.com>
>   Sent: Friday, March 18, 2016 1:27 PM
>   Subject: Re: [Techtoolslist] Fluke 6809 pod
>     
> On 03/17/2016 8:12 PM, Tony Jones wrote:
>> On Thu, Mar 17, 2016 at 7:18 PM, teeray <teeray at earthlink.net> wrote:
>>
>>> [anyone] considering buying a Fluke cpu pod might want to check the Fluke 90 series
>> oic.  I know nothing about the 90, what are the functional differences
>> if any?  The display seems very small (prior ebay link).
>>
>> don't really want to touch the 'ridiculous' bit with a 10' pole ;-)
>>
>> thanks!
>>
>>
> The 90 series was designed in Canada (Edmonton, Alberta) and worked
> fairly well as a clip-over the CPU type of exorcisor. I've got pretty
> much the complete set and they can be handy at times, especially if you
> don't have the pod for your 9010/9100. I have all the pods so these
> basically sit on a shelf.
>
> These only work with CPUs that can support having their address and data
> lines floated when you select a particular CPU pin, AND that pin MUST
> have a pullup resistor on the UUT PCB. In some cases that pin was simply
> wired to Vcc, and then to able to use the 90 you have to cut the Vcc
> trace and add a 10K pullup.
>
> The 90 works by cycle stealing, it runs when the CPU is on the opposite
> cycle. Rather cute in fact - the game can be running and you can run a
> RAM, ROM and I/O test at the same time!
>
> It has a RS-232 port as I recall and if more folks on the list had these
> then I probably would have played more with mine and we may have made
> some use of it here.
>
> Perhaps a show of hands of folks with the Z80 or 9809 Series 90?
>
> If there is interest perhaps I can contact the designer and see if he is
> any more interested in sharing info on the unit than he was the last
> time I asked about six years ago...what I'd like him to do is write the
> story of the 90 series device, and what the heck, I will try contacting
> him again in any case. It would be nice to get the story out!
>
> John :-#)#
>


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